Your hot water system works regularly throughout the year, but it is easy to overlook until the water turns cold or a leak appears. Understanding the signs of a problem and following the manufacturer’s maintenance guidance can help you arrange attention before a minor issue becomes more disruptive.
Maintenance requirements vary between electric, gas, solar and heat pump systems. The brand and model matter too, so always refer to the instructions supplied with your unit.
Why does hot water maintenance matter?
A hot water system contains plumbing connections, safety devices and components that can change condition over time. Depending on the model, a technician may need to inspect items such as valves, connections, anodes or system controls.
Regular attention can help identify:
- Leaks around the unit or connections
- Unusual changes in water temperature
- Damaged or deteriorating components
- Problems affecting heating or recovery
- Maintenance required under the manufacturer’s instructions
Maintenance does not guarantee that a system will never fail, but it gives you an opportunity to identify issues and discuss suitable repairs.
Signs your hot water system may need attention
You are running out of hot water more often
Running out of hot water may simply reflect a change in household usage. However, if the problem is new or getting worse, there may be a fault or a mismatch between the system and your needs.
The water temperature changes unexpectedly
Water that is consistently cooler than usual, takes longer to heat or varies unexpectedly may need investigation. Do not adjust electrical or gas components yourself.
You notice a leak
Check the area around the system for ongoing water pooling or signs of corrosion. Some discharge from a relief valve can occur during normal operation, but persistent or excessive discharge should be assessed.
If water is leaking significantly, keep clear of electrical equipment and contact a licensed professional for advice.
The system makes a new or unusual noise
Different systems make different sounds. A heat pump, for example, has operating components that can make noise during normal use. A new, persistent or unusually loud sound is worth reporting, particularly if it comes with reduced hot water or an error message.
Your hot water has changed colour or smell
Discoloured water or a change in smell can have several causes. A technician can help investigate the hot water system and advise whether further plumbing or water-supply checks are needed.
What can a homeowner check?
You can keep a simple record of your system without opening or repairing it.
- Note the brand and model shown on the manufacturer’s label.
- Keep the manual, installation documents and warranty information accessible.
- Look for visible leaks or damage around the unit.
- Note any error messages shown on a display.
- Keep the area accessible, while following the manufacturer’s instructions for clearances.
- Record when a problem occurs and whether it affects all hot water outlets.
Do not remove covers, repair gas or electrical components, or alter safety devices. Arrange a licensed technician when work is required.
Do all hot water systems need the same maintenance?
No. Maintenance depends on the system and its components.
Electric and gas storage systems
Storage systems may have valves and, depending on the cylinder design, an anode that needs inspection or replacement according to the manufacturer’s guidance. An anode requirement should not be assumed for every tank.
Heat pump systems
Heat pumps have components such as a fan and compressor, and may have filters or controls that require attention depending on the model. Ask your installer which checks apply to your system and how to keep the surrounding area suitable for airflow.
Solar hot water systems
A solar hot water system may include collectors, a storage tank, a booster and other components. The maintenance instructions depend on the design and manufacturer.
How often should a hot water system be serviced?
There is no single schedule that applies to every system. Follow the manufacturer’s instructions and ask your installer or service technician about the appropriate schedule for your model.
If you have lost the manual, provide the brand and model number to your service provider so they can help identify the relevant guidance.
Frequently asked questions
Is water coming from the relief valve always a problem?
Some discharge can occur as water heats and expands. Persistent or excessive discharge, or a change from normal operation, should be checked by a licensed technician.
Does a stainless steel tank always have an anode?
No. Cylinder designs vary. Check the manufacturer’s documentation for the specific model rather than assuming an anode is present or absent.
Can a hot water system be repaired?
Some faults can be repaired, but the right choice depends on the component, condition of the system, repair cost and availability of parts. A technician can explain whether repair or replacement is suitable.
Arrange hot water assistance in the Illawarra
If your hot water system is leaking, performing differently or due for a check, Illawarra Hot Water can discuss the issue and help you arrange the appropriate service.